西南林业大学学报2018，Vol.38Issue(2)：23-29,7.DOI:10.11929/j.issn.2095-1914.2018.02.004
石漠化区银合欢林光响应曲线模型比较
Comparison of Photosynthesis-light Response Curve Models for Leucaena glauca Plantation in Karst Area
摘要
Abstract
In this study, rectangle hyperbola model, nonrectangle hyperbola model, exponential model and modified rectangle hyperbola model were conducted to fit photosynthesis-light response curves the in the 8 years old Leucaena glauca plantation in karst area.The photosynthesis-light response curves were divided into 4 types of satura-tion curve,inhibition curve,unsaturation curve and weak light curve.Maximum net photosynthetic rate (Pmax),dark respiration rate (Rd),light compensation point(LCP),light saturation point(LSP) were also calculated and com-pared. The results showed that modified rectangle hyperbola model has the best goodness of fit of all types of photo-synthesis-light response curves(R2were between 0.991 8 and 0.999 8),and was only suitable for fitting inhibition curve. Modified rectangle hyperbola model and exponential model could predict Pmaxbetter than the others. Modified rectangle hyperbola model also had best estimation accuracy for Rdand LCP. In summary,modified rectangle hyper-bola model was the optimal model for photosynthesis-light response curves fitting of L.glauca plantation in karst area.关键词
石漠化/银合欢/光响应曲线/模型/拟合效果Key words
karst/Leucaena glauca/photosynthesis-light response curve/model/fitting effect分类
农业科技引用本文复制引用
郑威,何琴飞,彭玉华,申文辉,谭一波,何峰..石漠化区银合欢林光响应曲线模型比较[J].西南林业大学学报,2018,38(2):23-29,7.基金项目
广西科技厅基本业务费项目(林科201403号)资助. （林科201403号）
